Self-lubricating bolt.



s. G. BARNARD. SELF LUBRICATING BOLT. APPLICATION FILED .lUL-Y 21| 1914.

1,145,288. V Patented July', 1915.

SMM

COLUMBIA PLANDURAPH co..wASHlNGToN, D. C.

Unire s SAMUEL G. BAnNARD, or SEATTLE, WASHINGTON.

SELF-LUBRICATING- BOLT.`

To all whom it may concernl Be lit known that I, SAMUELG. BARNARD,

a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented new and useful Improvements in-Self-Lubricating Bolts, of which the following is a specification.

The invention has relation to bolts for connecting parts required to be lubricated` such asfvehicle springs, connecting rods and p v` The invention also consists of the novel features, details of construction and combination of parts, which hereinafter will be more particularly set forth, illustrated and claimed.

In the accompanying-drawing: Figure 1 Y is a central longitudinal section of a self lubricating bolt embodying the invention. Fig. 2 is a detail viewpof the cap and absorbent connected therewith disassociated from the bolt. Fig. 3 Vis a modified form o-f cap and absorbent.

lCorresponding and like parts are referred to in the following description and indicated in all the views of the drawing, bythe same reference characters. f j

The numeral 1 designates a bolt such as commonly provided forconnectingthe part to be secured. A ylongitudinal :bore 2 is formed in the bolt l andterminates a short One o more lateral outlets 3 communicate with the bore 2. A cap 4 closes the openend of the bore 2 and is preferably connected with the bolt by means of a screw thread. A stem 5 projects from the cap 4 and is adapted to receive an absorbent 'which' `practically fills the bore 2. The absorbent may consist of a plurality of washers 6 Iof felt or other material of a nature to absorb Vva comparatively large quantity ofoil. In the modification Specicationoietters Patent.

shown in Fig 3 the absorbent 7 consists of a single piece and may be connected to the cap 4 in any manner.

In they practicaloperation'of the invention the cap4 and,` oil distributer consisting of the absorbent connected with such cap are removed from the bolt and the absorbent Patented July e, 1915. 1 Application led July 2'1, 1914. Serial N o. 852,280v

part yconstituting theV Voil` distributer is l a cup or otherreceptacle until lsuch absorbent is thoroughly saturated. 'Ihe capand absorbent are replaced vand the oil taken up by the absorbent is gradually discharged Adipped into a quantity of oil contained in ca i and passes through the outlet 3 and lubricates the parts connected by means of the bolt. It will be understood that the absorbent may be lquickly charged in a few moments by simply dipping in the manner stated. The excesslve amount of oil'taken up by the distributer is naturally discharged and passing from the bore 2 vof the bolt through the outlet 3 lubricates the `'rubbing surfaces and thereby minimizes the wearrv thereon. i

. From the foregoing descriptiomtaken in connection with the accompanyingfdrawing, v the advantages of the construction and lof the method of operation will be readily'apparent to those skilled in the art to which the invention appertains, and while I have t. y described the principle of operation of the invention, Vtogether with the device which I now consider to be the best embodiment thereof, I desire to have it understood that i; the device shown is merely illustrative, and. that such changes may be made when der.

sired as are within the' scope; of the invention as claimed.-

Having `thus ldescribed is claimed as new, is

l. A. self lubricating bolt havingailongil l 95v tudinal bore and a lateral outlet, a cap fitted to one end of the bolt and closing the open` the invention what .t .i

end of the longitudinal bore,`a stem projectt i ing fromv the cap and adapted toenter the bore ofthe bolt, and a plurality of annular 7 washers of absorbent material slippedupon the said stem and adaptedto containa` quantity of oil for. distribution.

2.` A self ylubricating bolthavingalongitudinalbore and a lateral outlet, a capiitted I y 1,05 end of the longitudinal bore, a stem project-1 t f to oney end of the bolt and closing the open In testimony whereof I aHiX my signature m presence of two witnesses.

SAMUEL G. BARNARD.

ing from the cap and adapted to enter the bore of the. bolt, a plurality of annular washers of absorbent material slipped upon the said stem and adapted to contain a quantity of oil for distribution, and a nut threaded on the free end or" said stem whereby said washers are held against movement.

Witnesses:

HENRY S. FELTON, J. ZINA CoLToN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

